KYLE — Police have arrested Wilson Rene Molinares, a 22-year-old Texas State University undergraduate who allegedly caused a wreck last month that killed a 16-month-old boy and three other people. He is in custody at the Hays County jail.

Molinares was arraigned on four counts of second-degree felony manslaughter on Thursday by Hays County Pct. 2 Justice of the Peace Beth Smith, who set bond at a total of $1 million. He also faces a motion to revoke probation for a marijuana possession conviction in Denton County, jail records state.

Investigators say Molinares was driving the wrong way on northbound Interstate 35 early Feb. 19 when he struck a minivan. The impact killed 16-month-old Jacob Wall Hiebert and three other people in the van: Heinrich Martens, 31; Gerhard Hiebert Peters, 30; and Margaretha Wall Hildebrandt, 27. Two other children passengers, six-year-old and three-year-old girls, were hospitalized and survived their injuries.

Molinares was in critical condition himself when admitted to an Austin hospital, causing police to delay execution of arrest warrants issued by Smith. Police knew Molinares’ whereabouts during the two weeks between the wreck and Molinares’ arrest, chief Jeff Barnett said in a press release issued this morning.

Barnett did not say if he thinks Molinares was under the influence of alcohol or drugs prior to the wreck. The press release said an investigation is ongoing and that police will not answer questions about the wreck for the time being.